Coudenhove-Kalergi family
…of Ottensheim in Upper Austria, and the Ronsperg (Czech: Poběžovice) estate and castle in western Bohemia. Franz and Marie had six children, including Heinrich, the first count to use the double-barrelled name. In 1917 when Heinrich's eldest son, Johannes Evangelist Virgilio Coudenhove-Kalergi, was 24 years…